NETGROUP(5)NETGROUP(5)NAMEnetgroup - list of network groups
DESCRIPTION
NOTE: This manual page is only relevant if one is running Yellow Pages.
See netinfo(5) for information on using netgroups with NetInfo.
Netgroup defines network wide groups, used for permission checking when
doing remote mounts, remote logins, and remote shells. For remote
mounts, the information in netgroup is used to classify machines; for
remote logins and remote shells, it is used to classify users. Each
line of the netgroup file defines a group and has the format
groupname member1 member2 ....
where memberi is either another group name, or a triple:
(hostname, username, domainname)
Any of three fields can be empty, in which case it signifies a wild
card. Thus
universal (,,)
defines a group to which everyone belongs. Field names that begin with
something other than a letter, digit or underscore (such as ``-'') work
in precisely the opposite fashion. For example, consider the following
entries:
justmachines (analytica,-,sun)
justpeople (-,babbage,sun)
The machine analytica belongs to the group justmachines in the domain
sun, but no users belong to it. Similarly, the user babbage belongs to
the group justpeople in the domain sun, but no machines belong to it.
Network groups are contained in the yellow pages, and are accessed
through these files:
/etc/yp/domainname/netgroup.dir
/etc/yp/domainname/netgroup.pag
/etc/yp/domainname/netgroup.byuser.dir
/etc/yp/domainname/netgroup.byuser.pag
/etc/yp/domainname/netgroup.byhost.dir
/etc/yp/domainname/netgroup.byhost.pag
These files can be created from /etc/netgroup using makedbm(8).
FILES
/etc/netgroup
/etc/yp/domainname/netgroup.dir
/etc/yp/domainname/netgroup.pag
/etc/yp/domainname/netgroup.byuser.dir
/etc/yp/domainname/netgroup.byuser.pag
/etc/yp/domainname/netgroup.byhost.dir
/etc/yp/domainname/netgroup.byhost.pag
SEE ALSOgetnetgrent(3), exportfs(8), makedbm(8), ypserv(8), netinfo(5)
1 February 1985 NETGROUP(5)